On August 26, the 2nd World Humanoid Robot Games concluded at the National Speed Skating Oval (Ice Ribbon) in Beijing. A total of 666 teams from 16 countries, with 2056 robots, competed on the same stage.

Behind the viral footage of robots playing tennis, sprinting the 100‑meter dash and performing cheerleading routines lies an easily‑overlooked yet increasingly critical “data cable”. As the official motion‑capture technology provider for the Games, CHINGMU delivered positioning‑tracking and motion‑data‑acquisition support for the opening‑ceremony tennis match and multiple scenario‑based competitions via its high‑precision optical motion‑capture system. It converted robots’ real‑world positions, trajectories and postures on the competition field into recordable, analyzable and trainable data.
Ⅰ. The “AstraTennis Moment” at the Opening Ceremony: Motion Capture Enables Robots to “See and Strike Accurately”
On the opening night of August 22, the Galbot humanoid robot from Galaxy Universal Robotics stepped onto the tennis court and completed the world’s first large‑scale‑live‑broadcast fully‑autonomous human‑robot tennis rally with tennis star Zheng Jie and guest experience officer Li Yunrui. During singles and doubles matches, the robot independently judged the landing point of incoming balls, moved into position, adjusted its posture and executed forehand strokes, backhand strokes, serves, returns, baseline rallies and net volleys. It even got back on its feet and resumed play after falling during high‑speed offense‑defense exchanges.

High‑speed ball sports pose the strictest test for motion‑capture systems. Tennis balls travel fast within a large activity space and follow complex bounce trajectories. Robots must complete ball recognition, 3‑D positioning, trajectory prediction and swing execution within an extremely short time frame. CHINGMU adopted optical motion capture for real‑time 3‑D positioning and tracking of both the ball and robot body, feeding real‑time data on ball speed, landing points and robot spatial poses into the decision‑making and control system.
This had previously been verified during the AGIBOT HOPE AI table‑tennis exhibition match. CHINGMU’s Kunpeng (K)‑series optical motion‑capture system tracked high‑speed balls and robots at 300 FPS with ±0.02 mm accuracy.

Within the LATENT framework jointly proposed by Galaxy Universal Robotics and Tsinghua University, human motion data captured by motion‑capture covering forehand strokes, backhand strokes, side‑steps and cross‑steps freed robots from pre‑programmed limitations, lifting the success rate of forehand hitting to 90.9%.
Ball‑game contests are more than demonstrations; they validated the feasibility of the closed‑loop workflow: “external measurement → data → decision‑making”.
Ⅱ. Panoramic Capture for Scenario‑Based Competitions: Turning 21 Real‑World Tasks Into Quantifiable Data
The scenario‑based competition events were expanded from 6 in the first edition to 21, covering 9 real‑world sectors including households, hotels, industry, emergency rescue, hospitals and supermarkets. Six competitions were designed around professional job roles, with 1:1 reproduced real‑world work environments built inside the venue:
Housekeeping Service (Household): Tidy scattered items, fold clothes and store them in cabinets, wash and hang‑dry laundry;
Catering Service: Pick up meals according to voice‑based orders, heat food in microwave ovens, fetch beverages of no less than 200 ml and deliver them to hand‑over zones;
Retail Service (Supermarket): Pick goods according to online‑delivery receipts, conduct patrols for restocking, replace misplaced commodities;
Long‑sequence tasks including Warehouse‑Packing (Industrial), Fire‑Rescue Mission (Emergency) and Pharmacist (Hospital).
Scenario‑based competitions are characterized by “full autonomy, long‑duration workflows and authentic environments”. Robots independently complete perception, decision‑making and manipulation. CHINGMU’s motion‑capture system does not participate in robot control or decision‑making, but functions as an independent external measurement tool. It adopts a combined marker‑based and marker‑free technical solution, deploying K‑series, MC‑series, R3 and other motion‑capture devices together with CMAvatar software to perform panoramic positioning and tracking of robots across the competition venue, continuously recording their position, posture, trajectory, velocity and stability.

Ordinary cameras record “what happened”, while motion capture records “exactly how the action unfolded”. Hard‑to‑observe issues such as execution deviation, posture jitter and trajectory drift can now be quantified with objective digital data.
Ⅲ. From Competition Venues to R&D: How Data Drives Robot Evolution
The value of motion capture extends far beyond post‑event review. CHINGMU has built a complete workflow: real‑world motions → high‑quality motion data → robot training and optimization → physical‑robot execution → external measurement and validation → data feedback for further iteration.
First, evaluation. CHINGMU’s RoboEval robot motion‑evaluation platform captures full‑body robot trajectories in real‑time at sub‑millimeter precision. By analyzing dozens of quantifiable indicators such as posture stability, trajectory accuracy, center‑of‑offset error and turning‑response speed, it can generate robot‑evaluation reports with one‑click export. This is equivalent to giving robots a comprehensive “physical check‑up”, delivering data‑backed answers to questions such as whether motion accuracy meets standards, if trajectory deviations fall within acceptable ranges and whether posture control remains stable. During R&D, motion capture helps detect robot motion status and supports control‑algorithm iteration. At mass‑production stage, it evaluates performance indicators to verify factory‑acceptance compliance.

Second, training. CHINGMU provides end‑to‑end services covering motion‑data acquisition and dataset construction, robot training, control‑algorithm validation, real‑time teleoperation and full‑scene performance evaluation — the whole R&D lifecycle for humanoid robots. By deploying high‑performance motion‑capture camera arrays, the system can simultaneously achieve six‑degree‑of‑freedom spatial positioning and pose tracking for high‑speed moving objects and robot bodies. With sub‑millimeter accuracy and low‑latency data acquisition, it fully captures motion trajectories and real‑time joint data of robots. As ground‑truth data, these measurements deliver critical training labels and validation benchmarks for robot kinematic modeling and controller optimization.

Underpinning these capabilities is CHINGMU’s RoboDecode full‑lifecycle robot platform. Built upon optical motion capture and multi‑modal perception, it consists of seven modules: Acquisition, Fusion, Aggregation, Mapping, Training, Control and Evaluation. Data collected from the physical world is fused and annotated to build datasets. Motion mapping adapts data to different robot bodies, training and control modules generate execution policies, and final validation is carried out in real‑world environments. Evaluation results feed back into subsequent data‑acquisition and optimization cycles.

From the opening‑ceremony tennis match between robots and professional players, to real‑world task‑execution in scenario‑based events, CHINGMU has consistently pursued one goal: converting real‑world movements into robot‑readable data. Backed by its full‑stack capabilities spanning data acquisition, processing, training and evaluation, CHINGMU serves as the “Chief Coach” and “Gold‑Standard Examiner” for robots, delivering underlying data‑technology support for the embodied‑intelligence industry.